30625245 has 144 divisors (see below), whose sum is σ = 70424640. Its totient is φ = 12192768.

The previous prime is 30625229. The next prime is 30625249. The reversal of 30625245 is 54252603.

30625245 is a `hidden beast` number, since 30 + 625 + 2 + 4 + 5 = 666.

It is not a de Polignac number, because 30625245 - 2⁴ = 30625229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30625249) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 712194 + ... + 712236.

It is an arithmetic number, because the mean of its divisors is an integer number (489060).

Almost surely, 2^30625245 is an apocalyptic number.

30625245 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30625245 is an abundant number, since it is smaller than the sum of its proper divisors (39799395).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30625245 is a wasteful number, since it uses less digits than its factorization.

30625245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 30625245 is about 5534.0080411940. The cubic root of 30625245 is about 312.8670715915.

Adding to 30625245 its reverse (54252603), we get a palindrome (84877848).

The spelling of 30625245 in words is "thirty million, six hundred twenty-five thousand, two hundred forty-five".